Jump'In French Mouth Loose Large Flat Ring Blue Steel BitLoose large flat ring Blue Steel bit Jump'In Composition: loose ring bit with 90 mm large rings and 17 mm thick cannons made of Blue Steel. The Blue Steel alloy of this Jump'In bit collection is 54% carbon and 46% manganese. Blue Steel oxidizes when in contact of air and humidity creating a thin layer of rust which has a sweet taste that will naturally stimulate the production of saliva. By salivating more, horses will take the bit more. With this